Fornia



R. M. STEPHENS..

WATER HEATER.

APPLlcAloN FILED 050.27, 1919.

1,366,752. Patented Jan. 5,192'1.

ATTORNEY UNITED STATESl PATENT OFFICE.

'RICHARD II. sTErnENs, or GLEN ELLEN, CALIFORNIA, AssIeNon, BY IIEsNE ASSIGNMENTS, or ONE-HALE To ELIIEE I.. LIPI AND CHARLES E. .IIANLEYQ AND ONE-HALE To cHAnLEs E. DEGNED, ALL or Los ANGELES, CALI- Patented J an. 25, 1921.

EOENIA.

' WATER-HEATER.

1,366,752. Specication of Letters Patent.

Application mea December 27,1919. serial No. 347,819.

To all whamizay comm:

Be it known that I, RICHARD M. STEPHENS, of Glen Ellen, California, have invented certain new and useful Improvements in Water-Heaters, whereof the following-is a specification.

This invention relates to electric water heaters, and is intended to heat small bodies of water, such as a cupful, `or a small pailful, &c. The object of theinvention is to produce such a heater which shall bev cheap to construct,and durable and efectivein use.

The invention comprises a heating member composed of' an outer protective shell, with a cap and handle at one end thereof, and Within the outer shell, va hollow cylinder of chemically inert material, andpreferably of low electricconductivity, such as graphitic carbon, and within this hollow cylinder, a second hollow cylinder of similar material. Both carbon cylinders and the outer protective shell are perforated at intervals to permit the circulation of water through and about them, and the inner carbon rcylinder is open at the `bottom for the same purpose. The two carbon cylinders are connected with the two poles of an electric circuit, so that when the instrument is plunged into water, a current will flow, and the water which circulated through the instrument will be heated. j

I have fully illustratedy the instrument in the accompanying one sheet-of drawing, in which,"

The figure showsthe instrument in elevation, the lower part Vbeing in section to show the interior.

Referring'to the' drawing, 1 representsthe outer,. or protective shel which may be made of tin, or any other material which it is convenient to use. This outer vshell is perforated .at intervals with holes 2, vopenmg into its interior. Inside the shell 1 is a carbon shell or hollowcylin'derB, which is also piercedwith holes 4, opening into its interior. "Within the cylinder 3, is a second hollow cylinder 5, also pierced with holes 6, opening 1nto"-its interior. The two cylinders are spaced from each other, and from the outer shell, by rings 11 of rubber or other non-conducting material. The bottom of the inner carbon cylinder is open. The cylinders 3 and 5 are connected at the top with the two strands of a lamp cord, or other electric conductor, as seen at 10. Current thus flows through the" cord, which may be rovided with an ordinary lamp plug, and) be screwed into an ordinary lamp circuit, and

through thecarbon cylinders, and the waterl between them, and thus heats the water, when the instrument is plunged thereinto, the water circulatin through and about the cylinders throu ht epholes 2 and 4 and the open bottom o the cylinder `5. The cords '10, and their connections with the cylinders are thoroughl lprotected by the ca 7 an the handle 9, l

curedto shell 1 by a'screw, as 8, or in any other way, orma?7 be madeintegral therewith. The user o the instrument may thus use it without wetting the hands, o r getting them into the water, a particularly desirable feature as the water gets hot.

What I claim as new and desire to secure by LettersIatent is An electric water heating unit, comprising, in combination an outer metallic shell, a carbon shell, o n at the bottom, within said metallic she 1, non-conducting s acing rings separating said shells and leav1ng-an` U om the water into w ich the instrument 1s plunged. The cap may be seinner space, 'non-conducting vspacing rings separatmg said carbon shells' and leaving an annular chamber betweenl them, and a com bined cap and handle attached to'said metallic shell at the upper end thereof, said carbon shells constitutlng the termini. of an electric circuit;

In testimony that I have invented and claim the foregoing, I have hereto set my hand in the vpresence of two witnesses, this Sth'day of December, 1919. A

RICHARD M. STEPHENS.

Witnesses:

FRED HANSEN, R. D. KEER. 

